X-Git-Url: https://git.distorted.org.uk/~mdw/userv-utils/blobdiff_plain/f9e59051127e72847e1bee84ad52670e875f7d2f..5e8cb121d0061bf38eb33be82b0b026ddafeda63:/ipif/forwarder.h

diff --git a/ipif/forwarder.h b/ipif/forwarder.h
index 08eee56..5397317 100644
--- a/ipif/forwarder.h
+++ b/ipif/forwarder.h
@@ -1,4 +1,27 @@
 /*
+ * Encrypting tunnel for userv-ipif tunnels, header file
+ */
+/*
+ * This file is part of ipif, part of userv-utils
+ *
+ * Copyright 1996-2013 Ian Jackson <ijackson@chiark.greenend.org.uk>
+ * Copyright 1998 David Damerell <damerell@chiark.greenend.org.uk>
+ * Copyright 1999,2003
+ *    Chancellor Masters and Scholars of the University of Cambridge
+ * Copyright 2010 Tony Finch <fanf@dotat.at>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with userv-utils; if not, see http://www.gnu.org/licenses/.
  */
 
 #ifndef MECHS_H
@@ -6,10 +29,9 @@
 
 #include <stdio.h>
 #include <time.h>
+#include <string.h>
 #include <sys/utsname.h>
 
-#include "automech.h"
-
 struct buffer {
   unsigned char *base;
   unsigned char *start;
@@ -32,6 +54,8 @@ struct mechanism {
   mdec_functype *decode;
 };
 
+#include "automech.h"
+
 extern const struct mechanism *const mechanismlists[];
 
 /* setup function may call getarg_xxx functions and then
@@ -39,7 +63,8 @@ extern const struct mechanism *const mechanismlists[];
  * 
  * setup_in function may increase maxprefix and maxsuffix
  * code functions modify buffer in place
- * decode function returns message to print
+ * decode function returns 0 meaning packet decoded ok,
+ *  "" meaning discard it quietly, or message to print for verbose discard
  */
   
 const char *getarg_string(void);